(Solved): V. (10 points) A balanced three-phase Y-Y system with positive sequence shown in Fig 9 operates at ...

V. (10 points) A balanced three-phase Y-Y system with positive sequence shown in Fig 9 operates at \( 60 \mathrm{~Hz} \). If \( \dot{V}_{A N}=200 \angle 25^{\circ} \mathrm{V} \) in ms, and \( Z_{A}=Z_{m}=Z_{c}=25+j 5(\Omega) \). (a) Determine line currents \( \dot{I}_{f}, i_{s}, i_{c} \) in rms, respectively. (b) Determine the neutral line current \( I_{\mathrm{N}} \) in ms. (c) Determine the average power absorbed by the three-phase load.